We are happy to announce the 23rd official release of RIOT:
----------------------- * RIOT 2020.04 * -----------------------
The 2020.04 release includes:
- Add support for 6LoWPAN IPv6 extension header next header compression - Add support for DHCPv6 prefix delegation client - Add support for kw41zrf and at86rf215 IEEE 802.15.4 radios - Improvements on power management for ESP32 - Improvements and extensions in support of fe310 and lpc2387 - lwIP: provide support for asynchronous sock - Improvements on xtimer module and testing - Initial addition of the new timer subsystem: ztimer - Migration to Kconfig - phase I: add multiple GNRC and system modules - +10 new boards, +11 new drivers, +7 new packages
555 pull requests, composed of 1514 commits, have been merged since the last release, and 22 issues have been solved. 60 people contributed with code in 102 days. 3346 files have been touched with 358398 (+) insertions and 184720 deletions (-).
You can download the RIOT release from Github by cloning the repository and checkout the release tag  or by downloading the tarball , and look up the release notes for further details .
A big thank you to everybody who contributed! And special thanks to everyone who helped out during the release testing and provided bug fixes!